import json
from datetime import timedelta
from decimal import Decimal

import pytest
from django.utils.timezone import now
from django_scopes import scope

from pretix.base.models import (
    Event,
    Order,
    OrderPayment,
    OrderRefund,
    Organizer,
    Team,
    User,
)


@pytest.fixture
def env():
    o = Organizer.objects.create(name='Dummy', slug='dummy')
    event = Event.objects.create(
        organizer=o,
        name='Dummy',
        slug='dummy',
        date_from=now(),
        plugins='pretix.plugins.banktransfer',
    )
    user = User.objects.create_user('dummy@dummy.dummy', 'dummy')
    t = Team.objects.create(organizer=event.organizer, can_view_orders=True, can_change_orders=True)
    t.members.add(user)
    t.limit_events.add(event)
    order = Order.objects.create(
        code='1Z3AS',
        event=event,
        email='admin@localhost',
        status=Order.STATUS_PAID,
        datetime=now(),
        expires=now() + timedelta(days=10),
        total=23,
    )
    payment = OrderPayment.objects.create(
        order=order,
        amount=Decimal('23'),
        provider='banktransfer',
        state=OrderPayment.PAYMENT_STATE_CONFIRMED,
        info=json.dumps(
            {
                'payer': 'Abc Def',
                'iban': 'DE27520521540534534466',
                'bic': 'HELADEF1MEG',
            }
        ),
    )
    return event, user, payment


@pytest.mark.django_db
def test_perform_refund(client, env):
    event, user, payment = env
    client.login(email='dummy@dummy.dummy', password='dummy')
    assert not OrderRefund.objects.exists()
    url = '/control/event/dummy/dummy/orders/1Z3AS/refund'
    r = client.post(
        url,
        {
            f'refund-{payment.id}': '23.00',
            'start-mode': 'full',
            'perform': True,
        },
    )
    assert r.status_code == 302
    with scope(organizer=event.organizer):
        assert OrderRefund.objects.exists()
        refund = OrderRefund.objects.first()
        assert refund.payment == payment
        assert refund.info_data == {
            'payer': 'Abc Def',
            'iban': 'DE27520521540534534466',
            'bic': 'HELADEF1MEG',
        }


@pytest.mark.django_db
def test_cannot_perform_refund_with_invalid_iban(client, env):
    event, user, payment = env
    payment.info_data = {
        'payer': 'Abc Def',
        'iban': 'DE27520521540534534467',  # invalid IBAN
        'bic': 'HELADEF1MEG',
    }
    payment.save()
    assert not payment.payment_provider.payment_refund_supported(payment)

    client.login(email='dummy@dummy.dummy', password='dummy')
    url = '/control/event/dummy/dummy/orders/1Z3AS/refund'
    r = client.post(
        url,
        {
            f'refund-{payment.id}': '23.00',
            'start-mode': 'full',
            'perform': True,
        },
    )
    assert r.status_code == 200  # no successfull POST
    with scope(organizer=event.organizer):
        assert not OrderRefund.objects.exists()


@pytest.mark.django_db
def test_can_perform_refund_without_valid_bic(client, env):
    event, user, payment = env
    payment.info_data = {
        'payer': 'Abc Def',
        'iban': 'DE27520521540534534466',
        'bic': 'TROLOLOL',
    }
    payment.save()
    assert payment.payment_provider.payment_refund_supported(payment)
